CN205061610U - Continuous adsorption equipment of powder activity charcoal in liquid phase - Google Patents

Abstract

The utility model discloses a continuous adsorption device for powder activated carbon in the liquid phase, which comprises at least two stages of water treatment tanks, a filter tank connected to the water outlet of the corresponding water treatment tank, and a centrifugal pump connected to the bottom of the corresponding filter tank; The middle part of the pool is connected to the water inlet of the next-stage water treatment tank, and the middle part of the last-stage filter tank is connected to the water outlet of the device; each stage of centrifugal pump is connected to the water inlet of the upper-stage water treatment tank, and the first-stage centrifugal pump is connected to the filter press device; Wastewater is connected to the water inlet of the first-stage water treatment tank, and enters the next-stage water treatment tank through the corresponding filter tank; fresh powdered activated carbon is connected to the water inlet of the last-stage water treatment tank, and enters the upper-stage water treatment tank through the centrifugal pump. The utility model realizes a high-efficiency and low-cost treatment mode of the coking wastewater by using powder activated carbon for multi-stage and continuous deep treatment of the coking wastewater, and greatly improves the adsorption effect.

Description

Continuous Adsorption Device of Powdered Activated Carbon in Liquid Phase

technical field

The utility model relates to a continuous adsorption device of activated carbon in liquid phase, in particular to a device for continuous treatment and adsorption of coking wastewater by powdered activated carbon in liquid phase in multiple stages, belonging to the field of water treatment technical equipment.

Background technique

A large amount of coking wastewater generated during the process of coal coking, such as coal washing, coke quenching, by-product processing and refining, contains a large amount of refractory biodegradable compounds such as phenol, naphthalene, anthracene, and inorganic pollutants such as cyanide and sulfide. Aromatic hydrocarbons and heterocyclic compounds are mostly "three-to" substances. Therefore, the massive discharge of coking wastewater not only pollutes the environment, but also endangers human health.

At present, after secondary biochemical treatment of coking wastewater, the effluent concentration of CODcr and NH3-N in the wastewater is still high, and advanced treatment is required to meet the discharge standards. The methods of advanced treatment of coking wastewater mainly include coagulation method, adsorption method, fenton reagent method, wet catalytic oxidation technology, electrochemical oxidation technology and various biological treatment methods, etc., but the treatment process of these methods is relatively complicated, and may also produce different levels of pollution. Therefore, it is urgent to design a new method for advanced treatment of coking wastewater.

Contents of the invention

In view of the above existing technical problems, the utility model provides a continuous adsorption device for powdered activated carbon in the liquid phase, so as to achieve the purpose of simple treatment process and good effect.

In order to achieve the above purpose, the utility model provides a continuous adsorption device for powdered activated carbon in the liquid phase, comprising at least two water treatment tanks, a filter tank connected to the water outlet of the corresponding water treatment tank, and a centrifugal pump connected to the bottom of the corresponding filter tank ;The middle part of each filter tank is connected to the water inlet of the next-level water treatment tank, and the middle part of the last-level filter tank is connected to the water outlet of the device; each level of centrifugal pump is connected to the water inlet of the upper level water treatment tank, and the first-level centrifugal pump is connected to Press filter device; waste water is connected to the water inlet of the first-level water treatment tank, and enters the next-level water treatment tank through the corresponding filter tank; fresh powdered activated carbon is connected to the water inlet of the last-level water treatment tank, and enters the upper-level water treatment tank through the centrifugal pump Disposal box.

Considering both the adsorption effect and the cost, the water treatment tank is preferably three-level, which are the first-level water treatment tank, the second-level water treatment tank and the third-level water treatment tank; the waste water is connected to the first-level water treatment tank The water inlet and the outlet of the first-stage water treatment tank are connected to the first-stage filter, the bottom of the first-stage filter is connected to the filter press device through a centrifugal pump, and the middle part of the first-stage filter is connected to the water inlet of the second-stage water treatment tank The outlet of the second-stage water treatment tank is connected to the second-stage filter, the bottom of the second-stage filter is connected to the water inlet of the first-stage water treatment tank through a centrifugal pump, and the middle part of the second-stage filter is connected to the third-stage water The water inlet of the treatment tank; the fresh powder activated carbon is connected to the water inlet of the third-stage water treatment tank, and the outlet of the third-stage water treatment tank is connected to the third-stage filter, and the bottom of the third-stage filter is connected to the second-stage water treatment through a centrifugal pump. The water inlet of the box, and the water outlet of the connecting device in the middle of the third stage filter.

It can be seen from the above technical scheme that when the device is composed of three water treatment tanks, three filter tanks and three centrifugal pumps, each level of water treatment tanks, filter tanks and centrifugal pumps constitutes the first level of water treatment, and a total of three levels are formed. . The wastewater after preliminary treatment enters from the first-level water treatment tank, and after treatment, it enters the second and third-level water treatment tanks in turn; the fresh powdered activated carbon enters from the third-level water treatment tank, and after treatment, it is transferred to the second and third-level water treatment tanks by centrifugal pumps after settling. The first-stage water treatment tank realizes countercurrent, multi-stage and continuous adsorption between waste water and activated carbon.

Further, each stage of the water treatment tank is equipped with an agitator connected to a motor, so that sufficient contact can improve the water treatment effect.

Further, each stage of the filter is a filter with an inverted triangular longitudinal section.

In summary, the utility model realizes a high-efficiency and low-cost treatment method of coking wastewater by using powdered activated carbon for multi-stage and continuous advanced treatment of coking wastewater, and greatly improves the adsorption effect.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1. Water inlet of the first stage water treatment tank, 2. Water inlet of the second stage water treatment tank, 3. Water inlet of the third stage water treatment tank, 4. Agitator, 5. First stage water treatment tank, 6. Second-stage water treatment tank, 7. Third-stage water treatment tank, 8. First-stage filter, 9. Second-stage filter, 10. Third-stage filter, 11. Centrifugal pump, 12. Second-stage filter The water outlet of the first-level water treatment box, 13, the water outlet of the second-level water treatment box, and 14, the water outlet of the third-level water treatment box.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

The utility model is composed of two or more water treatment units, and each level of water treatment unit includes a water treatment tank, a filter tank and a centrifugal pump. As shown in FIG. 1 , the device is composed of three water treatment units, including a first-stage water treatment tank 5 , a second-stage water treatment tank 6 and a third-stage water treatment tank 7 arranged in sequence.

Wherein: the waste water outlet is connected to the water inlet 1 of the first-stage water treatment tank, the water outlet 12 of the first-stage water treatment tank is connected to the first-stage filter tank 8, and the bottom of the first-stage filter tank 8 is connected to the filter press device through a centrifugal pump 11, The middle part of the first stage filter tank 8 is connected to the water inlet 2 of the second stage water treatment tank. The water outlet 13 of the second-stage water treatment tank is connected to the second-stage filter 9, and the bottom of the second-stage filter 9 is connected to the water inlet 1 of the first-stage water treatment tank by a centrifugal pump 11, and the middle part of the second-stage filter 9 is Connect the water inlet 3 of the third stage water treatment tank. The outlet of the fresh activated carbon is connected to the water inlet 3 of the third-stage water treatment tank, and the water outlet 14 of the third-stage water treatment tank is connected to the third-stage filter 10, and the bottom of the third-stage filter 10 is connected to the second-stage water through a centrifugal pump 11. The water inlet 2 of the treatment tank is connected to the water outlet of the device in the middle of the third-stage filter tank 10 .

During implementation, fresh activated carbon first enters the device from the water inlet 3 of the third-level water treatment tank, flows into the third-level filter tank 10 from the water outlet 14 of the third-level water treatment tank to settle, and then is pumped to the second-level by the centrifugal pump 11 In the water treatment tank 6, activated carbon enters the first-level water treatment tank 5 in the same way, so that powdered activated carbon is distributed in the three water treatment units, and then the waste water can be passed through the water inlet 1 of the first-level water treatment tank. Enter the device, and reverse the direction of flow of activated carbon. And constantly supplement fresh gac from the water inlet 3 of the third stage water treatment tank to this device as the case may be.

Next, after the waste water is first treated by powdered activated carbon in the first-stage water treatment tank 5, it flows into the first-stage filter tank 8 through the water outlet 12 of the first-stage water treatment tank together with the activated carbon, and the activated carbon powder settles into the first-stage filter tank 8 bottom, and after the treated waste water is separated from the solid-liquid by activated carbon, it enters the second-stage water treatment tank 6 from the pipeline communicating with the middle part of the first-stage filter tank 8 .

In the same way, after the secondary treatment by powdered activated carbon in the second-stage water treatment tank 6, it enters the third-stage water treatment tank 7 through the second-stage filter tank 9, and the activated carbon settled down in the second-stage filter tank 9 is Pumped into the first-stage water treatment tank 5 by the centrifugal pump 11, and continue to use; after being treated by powdered activated carbon three times in the third-stage water treatment tank 7, it is discharged to the third-stage filter through the outlet 14 of the third-stage water treatment tank. In the pool 10, the whole device has finished treating the waste water at this moment, so the water after three advanced treatments can basically be discharged up to the standard.

In addition, the treated water discharged from the third filter 10 can be used for wet coke quenching or directly discharged. The activated carbon powder extracted from the first-stage filter tank 8 can be sent to pressure filtration, and then can be mixed with coal for coking or activation before water treatment application.

In the above-mentioned embodiment, a stirrer 4 is placed in each treatment tank, so that the powdered activated carbon can fully contact with the waste water, and the water treatment effect can be improved. Moreover, in order to better achieve the effect of activated carbon sedimentation and solid-liquid separation from the treated wastewater, a filter tank with an inverted triangular longitudinal section is used. After repeated tests, this device realizes multi-stage and continuous adsorption through the countercurrent flow of waste water and powdered activated carbon, which greatly improves the adsorption effect.

Claims (4)

1. A continuous adsorption device for powdered activated carbon in liquid phase, characterized in that it comprises at least two stages of water treatment tanks, a filter tank connected to the outlet of the corresponding water treatment tank, and a centrifugal pump connected to the bottom of the corresponding filter tank; The middle part of the filter tank is connected to the water inlet of the next-level water treatment tank, and the middle part of the last-level filter tank is connected to the water outlet of the device; each level of centrifugal pump is connected to the water inlet of the upper level water treatment tank, and the first-level centrifugal pump is connected to the filter press device The waste water is connected to the water inlet of the first-level water treatment tank, and enters the next-level water treatment tank through the corresponding filter tank; the fresh powdered activated carbon is connected to the water inlet of the last-level water treatment tank, and enters the upper-level water treatment tank through the centrifugal pump. 2. A continuous adsorption device for powdered activated carbon in liquid phase according to claim 1, characterized in that the water treatment tank has three stages, which are the first stage water treatment tank (5), the second stage Level water treatment tank (6) and third level water treatment tank (7); The waste water is connected to the water inlet (1) of the first-stage water treatment tank, and the outlet (12) of the first-stage water treatment tank is connected to the first-stage filter (8), and the bottom of the first-stage filter (8) passes through a centrifugal pump ( 11) Connect the filter press device, the middle part of the first stage filter (8) is connected to the water inlet (2) of the second stage water treatment tank; The water outlet (13) of the second-stage water treatment tank is connected to the second-stage filter (9), and the bottom of the second-stage filter (9) is connected to the water inlet (1) of the first-stage water treatment tank through a centrifugal pump (11) ), the middle part of the second-stage filter (9) is connected to the water inlet (3) of the third-stage water treatment tank; Fresh powdered activated carbon is connected to the water inlet (3) of the third-stage water treatment tank, and the water outlet (14) of the third-stage water treatment tank is connected to the third-stage filter (10). The bottom of the third-stage filter (10) passes through a centrifuge The pump (11) is connected to the water inlet (2) of the second-stage water treatment tank, and the middle part of the third-stage filter tank (10) is connected to the water outlet of the device. 3. A continuous adsorption device for powdered activated carbon in liquid phase according to claim 1 or 2, characterized in that a stirrer (4) connected to a motor is installed in each level of water treatment tank. 4. A continuous adsorption device for powdered activated carbon in liquid phase according to claim 1 or 2, characterized in that, each stage of the filter is an inverted triangle filter in longitudinal section.